Gas heater for hot-air furnaces



GI WI GAS HEATER FOR HOT AIR FURNACES. 1 APPLICATION FILED SEPT.9, 1919.

1,436,3 I; I; Patented NOV. 21, 1922. ;4 J

n, 4 9 )5; /f-"'/ i 0 2 32 L723 :i u J- .15 .18

?atented Nov. 21, 1922.

UNHTEE) fi'ffii'ffid' alt-4 o GEORGE W. TURNER, OF PHILADELPHIA, PENNSYLVANIA.

GAS HEATER, FOR HOT-AIR FURNACES.

Application filed September 9, 1919. Serial No. 322,758.

T 0 all whom it may concern.

Be it known that I, GEORGE W. TURNER, citizen of the United States. residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Gas Heaters for Hot-Air Furnaces, of which the following is a specification.

My invention relates to new and useful improvements in a gas heater for hot air furnaces, and has for its object to provide an exceedingly simple and effective device of this character which may be readily and quickly placed in or removed from any hot air furnace or heater of ordinary construction generally used at the present time for heating dwellings or other buildings, said device or heater using gas as fuel instead of anthracite coal or other similar heat producing substances.

Another object of the invention is to provide means for conveying the heated air from the combustion chamber of the furnace to the hot air chamber from which point it will be lead to the different rooms of a dwelling or other building by the heater pipes in the ordinary manner and to also provide means for leading the partially cooled air from the lower floor of the building to the hot air chamber for reheating.

Another object of the invention is to provide a plurality of racks or supports adapted to rest upon the furnace grate for supporting a number of diagrams arranged one above another all above the heating element which also rests upon the grate, said supports and diaphragms adapted to be placed in the furnace through the fuel door.

With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains, may understand how to make anduse the same, I will describe its construction in detail, referring by numerals to the accompanying drawing forming a part" of this application, in which Fig. 1, is a side elevation of a hot air furnace partly in section showing my heating device arranged therein, and

F 2, is a plan view of the diaphragm supported by the rails or supports.

In carrying out my invention as here embodied, 2 represents a hot air furnace comprising an outer shell 3, an inner shell 4, fire box 5 in which is located the grate 6 and an ash pit 7. The space between the outer shell 3 and the inner shell at forms a hot air chamber 8 while the space within the inner shell forms a combustion chamher 9, the heater is provided with a fuel supply opening or doorway 10, a clinker opening 11 and an ash pit doorway 12.

From the upper end of the hot air chamher lead the ordinary heater pipes 13 for distributing heat to any points desired their ends terminating in registers 14 of ordinary construction situated at desirable locations one of said registers being here shown as arranged in the first floor 15 of a building.

A down draft or return pipe 16 leads from a register 17 in the lower floor 15 into the hot air chamber 8 at the lower portion thereof as indicated at 18.

Instead of the ordinary pipe which leads to the chimney for carrying off gases and other products of combustion, I provide a pipe'19 leading from the upper portion of the combustion chamber 9 to the lower portion of the hot air chamber approximately opposite the point where the pipe 16 enters the hot air chamber so that the air from each pipe will move toward the other causing a commingling of the airs of different temperature which will thus reheat the partially cooled air returning through the pipe 16.

-Within the fire box are arranged a number of racks or supports 20 which rest upon the grate 6 and these supports each comprise an upright portion 21 and a pair of spaced le s 22 one of the legs being connected to the other by a bar or rest 23. On one of the legs and the upright of'each support are formed a number of lugs 24.

The racks or supports 20 hold or support the difierent diaphragms 2-5 and 26 the former-being smaller than the others and situated in the lowermost position directly above the burner 27 here shown as a gas burner having a gas supply pipe 28 connected therewith said pipe passing through the clinker opening and being connected substance.

with the burner which rests directly upon the grate 6.

The smaller diaphragm rests upon the lugs carried by the legs of the rack and one of the larger dia-phragms rests upon the bars or rests 23 of the racks While the others rest upon the lugs on the uprights of the racks. Where the device is to be installed in a furnace already in use, the larger diaphragms 26 are formed in two pieces as plainly shown in Fig. 2 so that they may be passed through the .tuel doorway 10 when v being installed.

I have shown and described my device as using a gas heater which burns illuminating gas as a heating element, but it Will be readily understood that an electric heating device may be placed upon the grate below the diaphragm with the wires for supplying current passing through the clinker. opening and connecting with the heating element.

By the use of this device a considerable saving in the cost of heating a house is had over the use of coal as the heat producing The heat from the heating eliment- 27 will quickly heat the diaphragms 25 and 26 so that air passing through the doorway 12 leading to the ash pitwill be raised in tem- 1 erature as it passes over and about the diaphragms in the upward travel through the fire box into the combustion chamber the air so heated will pass through the pipe 19 into the lower part of the hot air chamber 8 where it will be further heated by contact with the walls of the inner shell 4- and then pass through the different pipes 13 for distribution to the points desired. The cool air in the region of the register 17 will flow through the pipe 16 into the lower part of the hot air chamber 8 where it will be mixed with fresh'warm air issuing from the pipe 19 thus raising the temperature of the cooled air and caused to again circulate through the heater and be distributed through the pipes 13.

ln practice where the heating'device is to be installed in a hot air heater constructed for using coal or all ready in use as a coal burning heater the flue or smoke pipe is used to construct the return pipe by rear- I ranging its location so as to lead to the lower part of the heater where its end is passed through the outer shell 8. In such cases the grate is used as a support for the racks, thus obviating the necessity of discarding the grate and providing other supporting meansat additional expense.

Of course I do not wish to be limited to the exact details of construction as herein shown as these may be varied within the limits of the appended claims Without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is z- 1. In a device of the character stated, a furnace provided with a combustion chamber, and a surrounding hot air chamber, a pipe leading from the upper portion of the combustion chamber to the lower portion of the hot air chamber, a gas burner supported by the furnace grate, a supply pipe leading thereto, racks supported by the furnace grate, a small diaphragm supported by said racks above the gas burner and other larger diaphragms each consisting of two parts supported by the racks in spaced relation above the first named diaphragm.

2. In combination a furnace having a combustion chamber, a hot air chamber, a pipe for. forming a communication between said'chainbers leading from the upper portion of the combustion chamber to the lower portion of the hot air chamber, a return or down draft pipe leading to the lower portion of the hot air chamber at a point approximately opposite where the first named pipe enters the hot air chamber, diaphragm supports within the furnace and resting upon the furnace grate, diaphragms carried by said supports. and a heating element supported by the furnace grate below the diaphragms.

3. T he combination with a furnace including a grate, a combustion chamber, a hot air chamber, pipes leading from the hot air chamber anda pipe to torma communication between the upper portion of the com bastion chamber and the lower portion of thehot air chamber, of a heating element supported by the grate, racks also supported by the grate and a plurality of diaphragms positioned above one another in spaced relation supported on said racks.

i. The combination with a furnace including a grate, a combustion chamber, a hot air chamber, pipes leading from the hot air chamber and a pipe to form communication between the upper portion of the combustion chamber and the lower portion of the hot air chamber, ota heating element sup ported by the grate, racks also supported by the grate, a small diaphragm supported by said racks above the heating element and otherlargerdiaphragms, each consisting of two coacting parts supported by said racks in spaced relation abovethe said smaller diaphragms.

In testimony whereof, I have hereunto ttfliXQCl my signature.

stones w. TURNER. 

